MESON Chess Problem Database
Problem Display
PID: 173088 (1BK5/5Rp1/4B3/ppp5/r3k1bQ/1N1pn2n/6r1/2b1RN2 w - - 0 1)
Barulin, Mikhail Mikhailovich
Magyar Sakkvilag, 1927
#2
8 + 12
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rga2
- 2.Sg3#
- 1...Rb2
- 2.Sg3#
- 1...Rc2
- 2.Sg3#
- 1...Rd2
- 2.Sg3#
- 2.Rxe3#
- 1...Re2
- 2.Sg3#
- 1...Rf2
- 2.Sg3#
- 1...Rh2
- 2.Sg3#
- 1...Rg3
- 2.Sxg3#
- 1...Rd4
- 2.Sxc5#
- 1...Bb2
- 2.Rxe3#
- 1...Ba3
- 2.Rxe3#
- 1...Sg1
- 2.Rf4#
- 1...Sf2
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sg5
- 2.Rf4#
- 1...d2
- 2.Rxe3#
- 1...Rga2
- Tries
- 1.Qg3?
- threat
- 2.Qe5#
- 1...Rxg3
- 2.Sxg3#
- 1...d2
- 2.Rxe3#
- 2.Qxe3#
- 1...Bb2
- 2.Rxe3#
- 2.Qxe3#
- 1...Bf5
- 2.Qxg2#
- 1...Sf4
- 2.Rxf4#
- 2.Qxf4#
- 1...Bxe6+!
- threat
- 1.Qg5?
- threat
- 2.Qd5#
- 2.Qe5#
- 1...Sxg5
- 2.Rf4#
- 1...Bf5
- 2.Qxg2#
- 2.Qxf5#
- 1...Sf4
- 2.Rxf4#
- 2.Qxf4#
- 1...d2
- 2.Rxe3#
- 2.Qxe3#
- 2.Qd5#
- 1...Re2
- 2.Sg3#
- 2.Qe5#
- 1...Rd4
- 2.Sxc5#
- 2.Qe5#
- 1...Bb2
- 2.Rxe3#
- 2.Qxe3#
- 2.Qd5#
- 1...Be2
- 2.Qe5#
- 1...Bxe6+!
- threat
- 1.Qf6?
- threat
- 2.Sxc5#
- 2.Qe5#
- 1...Bxe6+
- 2.Qxe6#
- 1...Bf5
- 2.Qxf5#
- 1...Sf4
- 2.Qxf4#
- 1...d2
- 2.Sxc5#
- 2.Rxe3#
- 1...Rc2
- 2.Sg3#
- 2.Qe5#
- 1...Rc4
- 2.Qe5#
- 1...Bb2
- 2.Sxc5#
- 2.Rxe3#
- 1...Ba3
- 2.Rxe3#
- 2.Qe5#
- 1...c4
- 2.Sc5#
- 2.Qd4#
- 2.Qe5#
- 1...gxf6!
- threat
- 1.Qd8?
- threat
- 2.Sxc5#
- 2.Qd5#
- 1...Bf5
- 2.Qd5#
- 1...Sf4
- 2.Rxf4#
- 1...Rc2
- 2.Sg3#
- 2.Qd5#
- 1...Re2
- 2.Sg3#
- 2.Sxc5#
- 1...Rc4
- 2.Qd5#
- 1...Rd4
- 2.Sxc5#
- 1...Ba3
- 2.Rxe3#
- 2.Qd5#
- 1...Be2
- 2.Sxc5#
- 1...c4
- 2.Sc5#
- 2.Qd4#
- 2.Qd5#
- 1...Bxe6+!
- threat
- 1.Qxh3?
- threat
- 2.Rf4#
- 1...Bxe6+
- 2.Qxe6#
- 1...d2
- 2.Rxe3#
- 2.Qxe3#
- 1...Rf2
- 2.Sg3#
- 1...Bf5
- 2.Qxg2#
- 2.Qxf5#
- 1...g5!
- threat
- 1.Qxg4+?
- 1...Sf4
- 2.Rxf4#
- 2.Qxf4#
- 1...Rxg4!
- 1...Sf4
- 1.Qh7+?
- 1...Bf5
- 2.Qxf5#
- 1...g6!
- 1...Bf5
- 1.Qg3?
- Keys
- 1.Qe7!
- threat
- 2.Qb7#
- 1...Bxe6+
- 2.Qxe6#
- 1...Sf4
- 2.Rxf4#
- 1...d2
- 2.Rxe3#
- 1...Re2
- 2.Sg3#
- 1...Rd4
- 2.Sxc5#
- 1...Be2
- 2.Bc4#
- threat
- 1.Qe7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 11
- Sets
- R(b);N_GUARD::S(B)
- R(b);N_GUARD,N_SPINS(d)::S(B)
- R(b);N_GUARD::S(B),XR(b)
- R(f);SBLOCK::S(C),XP(k)
- B(a);N_GUARD::R1(A),XS(d)
- S(e);N_GUARD::R1(F)
- S(e);N_GUARD,N_SPINB(h)::R1(F),XS(e)
- P(c);S_CUTB(a)::R1(A),XS(d)
- Tries
- Try
- Q(D);N_PINB(h)
- Threat
- QAR1(D)
- Vars
- R(b);XQ(D)::S(B),XR(b)
- B(h);N_GUARD::QAB(D),XR(b)
- Refutation
- B(h);CHECK,XB(E)
- Try
- Q(D);N_PINB(h)
- Threat
- DUALS(2)
- Vars
- S(e);N_GUARD,XQ(D)::R1(F)
- B(h);N_PINB(E),N_SPINS(d)::QAR1(D)
- Refutation
- B(h);CHECK,XB(E)
- Try
- Q(D);N_PINB(h)
- Threat
- DUALS(2)
- Vars
- B(h);CHECK,OGATE,XB(E)::QAR2(D),XB(h)
- B(h);N_GUARD::QAB1(D),XB(h)
- S(e);N_GUARD::QAR1(D),XS(e)
- R(f);::QAR1(D)
- Refutation
- P(l);XQ(D)
- Try
- Q(D);N_PINB(h)
- Threat
- DUALS(2)
- Vars
- B(h);::QAB1(D)
- S(e);N_GUARD::R1(F),XS(e)
- R(f);::QAB1(D)
- R(f);::S(C),XP(k)
- B(h);N_PINB(E),N_SPINS(d)::S(C),XP(k)
- Refutation
- B(h);CHECK,XB(E)
- Try
- Q(D);N_PINB(h),XS(e)
- Threat
- R1(F)
- Vars
- B(h);CHECK,OGATE,XB(E)::QAR2(D),XB(h)
- R(b);N_GUARD::S(B)
- Refutation
- P(l);
- Try
- Q(D);CHECK,N_SPINB(E),XB(h)
- Refutation
- R(b);XQ(D)
- Try
- Q(D);CHECK,N_PINB(h)
- Vars
- B(h);N_GUARD,P_SPINB(h)::QAB1(D),XB(h)
- Refutation
- P(l);P_SPINP(l)
- Try
- Actual
- Q(D);N_PINB(h)
- Threat
- QAB(D)
- Vars
- B(h);CHECK,OGATE,P_SPINB(h),XB(E)::QAR2(D),XB(h)
- S(e);N_GUARD::R1(F),XS(e)
- P(c);S_CUTB(a)::R1(A),XS(d)
- R(b);N_GUARD,N_SPINS(d)::S(B)
- R(f);SBLOCK::S(C),XP(k)
- B(h);N_PINB(E),N_SPINS(d)::QAR(D)+B(E)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).